expression += createFunctionCall("ReadFile", sourceId);
expression += ";";
targetId = new TargetId();
expression += createFunctionCall("WriteFile", targetId);
expression += ";";
scriptId = new ScriptId();
expression += createFunctionCall("RunScript", scriptId);
expression += ";";
emailId = new EmailMessageId();
expression += createFunctionCall("SendEmailMessage", emailId);
}